Split pulley.



G. S. DAVIS.

SPLIT PULLEY.

APPLIOATION FILED we. 17, 1910.

1,006,467. Patented Oct. 24, 1911.

2 SHEETS-SHEET 1.

:OLUMBIA PLANDORAPH COHWASHINOTON D. C.

WITNESSES 0. S. DAVIS.

SPLIT PULLEY.

APPLICATION FILED AUG. 17, 1910.

Patented Oct. 24, 1911.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH c0., WASHINGTON. n. c.-

INVENTOR r/eaj b:

CHARLES S. DAVIS, OF PHILADELPHIA, PENNSYLVANIA.

SPLIT PULLEY.

Specification of Letters Patent.

Patented Oct. 24, 1911.

Application filed August 17, 1910. Serial No. 577,612.

To all whom it may concern:

Be it known that I, CHARLES S. DAVIS, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements in SplitPulleys, of which the following is a specification. I

My invention relates to split metal pulleys, and particularly to new anduseful improvements in the pulley as disclosed in Patent Number 940,720.1

An important object of this invention is to improve the structure of apulley of the above character, whereby the same is rendered stronger andmay be more cheaply manufactured.

Other objects and advantages of this invention will appear in the courseof the following description.

In the accompanying drawings forming a part of this specification, andin which like numerals are employed to designate like parts throughoutthe same, Figure 1 is an end elevation of a complete pulley,-Fig. 2 is acentral vertical longitudinal section through the same, Fig. 3 is aperspective view of gusset plates employed upon the pulley, Fig. 1 is acentral transverse sectional view, Fig. 5 is a fragmentary detail viewof a portion of the pulley shown in Figs. 1 to 1, inclusive, Fig. 6 is adetail view taken on line 66 of Fig. 5.

In the drawings, wherein is illustrated a preferred embodiment of myinvention, the numerals l and 2 designate halves of the pulley. Thesehalves are alike and a description of one of them will answer for both.Each of the halves 1 and 2 comprises a segmental sheet-metal rim 3,provided upon its inner surface with stiffening ribs 4. These stiffeningribs are L-shaped in vertical cross-section and spaced as shown. Each ofthe stiffening ribs comprises portions 5 and 6, which for the sake ofclearness may be termed horizontal and vertical 5 extend outwardly forengagement with the edges of the rim 3, said edges of the rim being bentabout said horizontal flanges and rigidly secured to the same, by meansof welding or the like. Each of the halves l and 2 further comprisesarms 7, which may preferably be L-shaped in cross-section. The ends ofthe arms 7 are rigidly secured to the vertical flanges 6, by means ofdiametrically arranged pairs of gusset plates 8,

' see Fig. 3. One of the gusset plates 8 is ;rigidly secured to thevertical flanges 6 of the half 1, and the other plate 8 is rigidlysecured to the corresponding flanges of the stiffening ribs of the half2. The plates 8 are provided with cooperating tongues and 1 grooves 9and 10, respectively, as clearly shown in Fig. 8. The ends of the arms 7of the pulley halves l and 2 are secured together by means of bolts 11,as shown. The pulley halves 1 and 2 are thus secured together by thebolts 11, and the pairs of gusset plates 8 serve to prevent a movementof either pulley half with relation to the other in a direction parallelto the axis of the pulley. The stiffening ribs 4 have bolted or rivetedto their vertical flanges, arms 12, as shown. These arms serve tostrengthen the pulley halves. The junction of the segmental rim sections8 of the pulley halves and the stiflening ribs of the same, take placein the same plane, and for this reason the adjacent ends of thehorizontal flanges of the stiflening ribs 4, are provided withcooperating tongues and grooves 13 and 1 1, respectively. By thisconstruction the junction of the rim sections 3 is spanned by thetongues 13, whereby the strength of the pulley is increased and thestiflening ribs are given inter-locking engagement with each other toprevent lateral movement. The arms 7 extend in opposite directions toeach other near the center of the pulley, for receiving therebetween ahub 15. This hub comprises in nor spacers 16 which carry semicylindricalmembers 17. The semi-cylindrical members 17 are riveted to theirrespective arms 7, as shown at 18, the rivets 18 also serving to securethe inner spacers 16 to the arms 7 and to secure outer spacers 19 tosaid arms. The arms 7 and spacers 16 and 19 are provided with suitableopenings for receiving clamping bolts 20, which connectarms 7 of thepulley halves 1 and 2, as shown. The function of the clamping bolts 20is to rigidly lock the pulley upon a suitable shaft (not shown).

From the above description it is obvious that I have provided a pulleyformed of two separable halves, which may be separated to apply thepulley to its shaft and then securely connected together upon saidshaft.

I wish it understood that the form of my invention herewith shown anddescribed is Having thus fully described my invention what I claim asnew and desire to secure by Letters Patent, is

In a pulley of the character described, detachable pulley halves,comprising segmental rims, spaced stiffening ribs secured vto each ofthe segmental rims, each segmental rim having its outer edges bent uponitselfto clamp said stiffening ribs, the adjacent ends of the stiffeningribs of the pulley halves being provided with 0051;)-

.erating tongues and grooves so that said tongues span the junction ofthe segmental rims, pairs of U-shaped gusset plates disposed adjacentthe junction of the segmental rims, said U-shaped gusset plates havingthe sides thereof provided with cooperating tongues and grooves so thatthe last named tongues span the junction of the rims at right angles tothe first named tongues, and means to rigidly connect said gusset platesand stiffening ribs.-

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES S. DAVIS. Witnesses:

GEORGE S. CARTER, SELDEN S. CARTER.

Copies of this patent may'be obtained for five cents each, by addressingthe Commissioner of Patents.

' Washington, I). C.

